Desertification has rapidly progressed in arid areas of Asia. Various practices aimed at combating desertification have been tried and cintinue to be used, basic information on wild bees which pollina...te plants in dsert and semi-desert areas in insufficient. Wild bees are very important insects for the pollination of semi-desert plants. We conduced five surveys in Kazakhstan, Kyrgyzstan and northwestern China from 2000 to 2004. We collected about 30,000 bee specimens and studied the taxonomy and biogeography of these wild bees. We found some useful pollinating wild bee species and studied the nesting biology of these bees in the field.続きを見る